Jinse Finance reported that following a successful trial on the Holesky testnet two weeks ago, Ethereum developers launched the second test of the Fusaka upgrade on the Sepolia testnet earlier on Tuesday. Before developers determine the mainnet activation date, the final rehearsal is scheduled for October 28 on the Hoodi testnet, marking the last step before deployment. Fusaka introduces PeerDAS, a data validation method that allows validators to process only partial data, thereby reducing bandwidth requirements and lowering costs for institutional users and Layer2 networks.